863264605 has 24 divisors (see below), whose sum is σ = 1246610520. Its totient is φ = 571536000.

The previous prime is 863264599. The next prime is 863264617. The reversal of 863264605 is 506462368.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 105308644 + 757955961 = 10262^2 + 27531^2 .

It is not a de Polignac number, because 863264605 - 2⁹ = 863264093 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53646 + ... + 67855.

It is an arithmetic number, because the mean of its divisors is an integer number (51942105).

Almost surely, 2^863264605 is an apocalyptic number.

It is an amenable number.

863264605 is a deficient number, since it is larger than the sum of its proper divisors (383345915).

863264605 is a wasteful number, since it uses less digits than its factorization.

863264605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121549 (or 121542 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

The square root of 863264605 is about 29381.3649274502. The cubic root of 863264605 is about 952.1703306820.

It can be divided in two parts, 8632 and 64605, that added together give a palindrome (73237).

The spelling of 863264605 in words is "eight hundred sixty-three million, two hundred sixty-four thousand, six hundred five".